I stopped by three places that sell ammo today, and found stock at all three places. Not in great quantities, but in common calibers. 9 mm and .40, 30/30, .270, 30/06. Two of the dealers even had .223 ammo. And the supply of shotgun shells seem to be improving, as well.
I expect the supply of .22′s will improve by sometime in April. Hopefully sooner, but April is what I hear for the factories to begin to catch up on current orders and late June to clear the backlog out.